Skip to product information
1 of 1


Boron Nitride Gasket, BN Gasket

Boron Nitride Gasket, BN Gasket

Boron Nitride gaskets are high-performance gaskets made from boron nitride, a synthetic ceramic material that offers excellent thermal and electrical insulation properties. These gaskets are designed to seal and isolate high-temperature or high-vacuum environments, where other gasket materials may fail or degrade.

Boron Nitride gaskets can withstand extreme temperatures up to 2000°C and provide superior resistance to thermal shock, making them ideal for use in applications such as semiconductor manufacturing, aerospace, and nuclear industries. They also exhibit high chemical resistance, low coefficient of friction, and excellent dielectric properties, making them suitable for use in electrical and electronic applications.

Boron Nitride gaskets are available in various shapes and sizes, including sheet, disc, and custom-designed shapes to meet specific application requirements. They can be machined, cut, or formed into complex shapes, making them versatile and easy to use in different applications. Overall, Boron Nitride gaskets provide exceptional performance and reliability in demanding environments.

Comparison of Boron Nitride Ceramics

Compositions BN>98% BN+SiC+ZrO2 BN+AIN
Binder B2O3 / AlBO3
Density 2.1-2.2 g/cm3 2.3-3.0 g/cm3 2.5-2.6 g/cm3
25°C Volume Resistivity >1013 Ω·cm >1012 Ω·cm >1014 Ω·cm
Max. Service Temp. (°C)
Inert Gas;
High Vacuum










Flexural Strength 75 Mpa 100 Mpa 130 Mpa
Compressive Strength 100 Mpa 300 Mpa 250 Mpa
Coefficient of Thermal Expansion
2.0 x 10–6/K 4.0 x 10–6/K 4.5 x 10–6/K
Thermal Conductivity 30 W/mK 40 W/mK 60 W/mK


Boron Nitride Gasket Applications

– Boron Nitride components for PVD, MOCVD, MBE system.
– Insulators for high-temperature furnace
– Feedthrough for high voltage equipment
– Spacers for glass melting
– Boron Nitride parts for ion injection equipment

Boron Nitride Gasket Available Materials

Material Description Availability
BN99 Hot pressed at high temperature (1900℃).
Excellent corrosion resistance and thermal conductivity. Limited wear resistance
Self-bonded and high purity(>99%)
Machinable Blanks
Finished Parts
BNBO General purpose material
Bonded by boric oxide
Finished Parts
BNCB Calcium borate bonded boron nitride
Enhanced moisture resistance
Finished Parts
BN60 BN 60%, SiO2 40% Finished Parts
BN40 BN 40%, SiO2 60% Finished Parts
ZSBN BN-45%, Zr2O3 45% Finished Parts


We handle our products with care to ensure they remain in their original condition during storage and transportation and to preserve their quality.


View full details

Contact form